fcup-smsend[mult]: fix buglet in K&R C NULL pointer passing The only 100% safe way to pass a NULL pointer as a function argument in K&R C is to cast 0 to a pointer type; failing to do so may cause mysterious bugs (invalid stack frames or garbage in argument registers) on 64-bit machines. This issue has already been fixed in most of FC host tools, but I just found some missed spots: passing of NULL UDH to PDU encoding functions in fcup-smsend[mult] in the case of single (not concatenated) SMS.

/*
 * By default the loadagent.srec target utility and some hardware parameter
 * files are sought in an installation directory, to make the more common
 * command line operations more manageable.
 */

char default_helpers_dir[] = "/opt/freecalypso/loadtools";
char default_compalstage_dir[] = "/opt/freecalypso/target-bin";
char default_loadagent_image[] = "/opt/freecalypso/target-bin/loadagent.srec";